Man and Whale - Recommendations

Alt title: Kouchou-sensei to Kujira

If you're looking for manga similar to Man and Whale, you might like these titles.

Noah's Ark

Noah's Ark

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Ookami no Hi: Ezo Ookami Zetsumetsuki

Ookami no Hi: Ezo Ookami Zetsumetsuki

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Ano Hi kara no Manga

Ano Hi kara no Manga

3/11... As a result of the biggest earthquake disaster in history, everything changed that day. It has now been 50 years since the Great East Japan Earthquake hit Japan. The Earth has finally run out of oil, and society is undergoing a huge shift as it migrates away from its dependence on fossil fuels. People now get their electricity from solar and wind, and use as little of they're able to produce as possible - meaning a life without automobiles or flashy neon signs. An elderly person who lives on the coast where a nuclear power plant once was became resentful upon recalling how well-off Japan was at the time... until being moved to tears after noticing the beautiful star-filled sky that never could have been seen back then.

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Sakufuu no Banka

Sakufuu no Banka

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Zetsumetsu Doubutsu Monogatari: Chijou yori Eikyuu ni Kiesatta Mono e no Requiem

Zetsumetsu Doubutsu Monogatari: Chijou yori Eikyuu ni Kiesatta Mono e no Requiem

The dodo, the Steller's sea cow, the Japanese wolf... These are among eight species of animals and birds that were lead to extinction by the hands of humans. This series depicts the sequence of events that lead to their extinction, as well as exactly what humankind did to them. Leaving aside the mammoth, which was wiped out by our primitive human ancestors who needed to eat in order to survive, the animals in this series were all wiped out by the greed of humans who used them to make money, or because of the vanity and egos of humans. By means of these extinct animals, we can see through to the darkness that is in people's hearts.

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Forest Crisis

Forest Crisis

The forests are in danger! Tina and Tai stumble upon a space pod that has crash-landed onto earth! Befriended by two space aliens, they are unwittingly dragged along on a recovery mission that takes them deep into the forests around the world. However, the kids soon discover that the forests are disappearing! What is going on?! Can they learn the science behind the forests' disappearance and do something before it’s too late?!

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Forest Bear

Forest Bear

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Shangri-La (Light Novel)

Shangri-La (Light Novel)

In the middle of the 21st century when global warming has turned Tokyo into a tropical city. To reduce the temperature at the heart of the city by 5°C (9°F), the city is being reborn as the world's largest forest city. However, despite the flow of refugees to the new city of Atlas, there are not many residents who can actually live there. Moreover, anti-government guerillas are attempting to stop the forestation.

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The Frog Princess (Jeff LOEW)

The Frog Princess (Jeff LOEW)

Marine Biologist, Larissa Talcott is torn between a re-newed love relationship with attorney, Brian Liam, because Brian's law firm is representing a company plotting to renovate a local pond into commercial property. Larissa is driven to stop them in order to protect the ecosystem that inhabits the pond; she is given the nickname "Frog Princess" by her friends and colleagues. Will Brian and Larissa compromise their firm beliefs for the sake of their relationship?

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Fourteen

Fourteen

In the future, humanity has destroyed the world’s plant and animal life out of greed and consumption. Meat is biologically created from animal cells to eat, and little remains of what used to be the environment. However, when a mutated, engineered chicken breast morphs into a sentient, vengeful being and human children begin to be born with green hair and spots, it becomes clear that mankind’s fate is anything but secure…

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